I cannot see the brakes well enough, but they look like SR or Croce rather than delta. The rest of the parts appear to be early C-Record, and easily worth the price alone.

The frame can be repaired, but then I think that it would become a labor of love, rather than an opportunity for profit. I think that one would be, well, $125 for the downtube, $75 for straightening, $300 for a complete repaint, $75 or so for decals, or about $900 for a fully restored DeRosa Professional. I'd guess about that much for one on eBay...